444444131 has 4 divisors (see below), whose sum is σ = 445223064. Its totient is φ = 443665200.

The previous prime is 444444103. The next prime is 444444149. The reversal of 444444131 is 131444444.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 444444131 - 2²² = 440249827 is a prime.

It is a super-2 number, since 2×444444131² = 395061171160690322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 444444094 and 444444103.

It is not an unprimeable number, because it can be changed into a prime (444444101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 388610 + ... + 389751.

It is an arithmetic number, because the mean of its divisors is an integer number (111305766).

Almost surely, 2^444444131 is an apocalyptic number.

444444131 is a deficient number, since it is larger than the sum of its proper divisors (778933).

444444131 is an equidigital number, since it uses as much as digits as its factorization.

444444131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 778932.

The product of its digits is 12288, while the sum is 29.

The square root of 444444131 is about 21081.8436338002. The cubic root of 444444131 is about 763.1426489667.

Adding to 444444131 its reverse (131444444), we get a palindrome (575888575).

The spelling of 444444131 in words is "four hundred forty-four million, four hundred forty-four thousand, one hundred thirty-one".